hdc9224.c revision 1.46
1 /* $NetBSD: hdc9224.c,v 1.46 2009/03/14 21:04:16 dsl Exp $ */ 2 /* 3 * Copyright (c) 1996 Ludd, University of Lule}, Sweden. 4 * All rights reserved. 5 * 6 * This code is derived from software contributed to Ludd by Bertram Barth. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed at Ludd, University of 19 * Lule}, Sweden and its contributors. 20 * 4. The name of the author may not be used to endorse or promote products 21 * derived from this software without specific prior written permission 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 24 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 25 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 26 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 27 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 28 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 29 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 30 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 31 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 32 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 33 */ 34 35 /* 36 * with much help from (in alphabetical order): 37 * Jeremy 38 * Roger Ivie 39 * Rick Macklem 40 * Mike Young 41 * 42 * Rewritten by Ragge 25 Jun 2000. New features: 43 * - Uses interrupts instead of polling to signal ready. 44 * - Can cooperate with the SCSI routines WRT. the DMA area. 45 * 46 * TODO: 47 * - Floppy support missing. 48 * - Bad block forwarding missing. 49 * - Statistics collection. 50 */ 51 #undef RDDEBUG 52 53 #include <sys/cdefs.h> 54 __KERNEL_RCSID(0, "$NetBSD: hdc9224.c,v 1.46 2009/03/14 21:04:16 dsl Exp $"); 55 56 #include <sys/param.h> 57 #include <sys/systm.h> 58 #include <sys/kernel.h> 59 #include <sys/conf.h> 60 #include <sys/file.h> 61 #include <sys/stat.h> 62 #include <sys/ioctl.h> 63 #include <sys/buf.h> 64 #include <sys/bufq.h> 65 #include <sys/proc.h> 66 #include <sys/user.h> 67 #include <sys/device.h> 68 #include <sys/disklabel.h> 69 #include <sys/disk.h> 70 #include <sys/syslog.h> 71 #include <sys/reboot.h> 72 73 #include <uvm/uvm_extern.h> 74 75 #include <ufs/ufs/dinode.h> /* For BBSIZE */ 76 #include <ufs/ffs/fs.h> 77 78 #include <machine/pte.h> 79 #include <machine/sid.h> 80 #include <machine/cpu.h> 81 #include <machine/uvax.h> 82 #include <machine/ka410.h> 83 #include <machine/vsbus.h> 84 #include <machine/rpb.h> 85 #include <machine/scb.h> 86 87 #include <dev/mscp/mscp.h> /* For DEC disk encoding */ 88 89 #include <vax/vsa/hdc9224.h> 90 91 #include "ioconf.h" 92 #include "locators.h" 93 94 95 /* 96 * on-disk geometry block 97 */ 98 #define _aP __attribute__ ((packed)) /* force byte-alignment */ 99 struct rdgeom { 100 char mbz[10]; /* 10 bytes of zero */ 101 long xbn_count _aP; /* number of XBNs */ 102 long dbn_count _aP; /* number of DBNs */ 103 long lbn_count _aP; /* number of LBNs (Logical-Block-Numbers) */ 104 long rbn_count _aP; /* number of RBNs (Replacement-Block-Numbers) */ 105 short nspt; /* number of sectors per track */ 106 short ntracks; /* number of tracks */ 107 short ncylinders; /* number of cylinders */ 108 short precomp; /* first cylinder for write precompensation */ 109 short reduced; /* first cylinder for reduced write current */ 110 short seek_rate; /* seek rate or zero for buffered seeks */ 111 short crc_eec; /* 0 if CRC, 1 if ECC is being used */ 112 short rct; /* "replacement control table" (RCT) */ 113 short rct_ncopies; /* number of copies of the RCT */ 114 long media_id _aP; /* media identifier */ 115 short interleave; /* sector-to-sector interleave */ 116 short headskew; /* head-to-head skew */ 117 short cylskew; /* cylinder-to-cylinder skew */ 118 short gap0_size; /* size of GAP 0 in the MFM format */ 119 short gap1_size; /* size of GAP 1 in the MFM format */ 120 short gap2_size; /* size of GAP 2 in the MFM format */ 121 short gap3_size; /* size of GAP 3 in the MFM format */ 122 short sync_value; /* sync value used when formatting */ 123 char reserved[32]; /* reserved for use by the RQDX formatter */ 124 short serial_number; /* serial number */ 125 #if 0 /* we don't need these 412 useless bytes ... */ 126 char fill[412-2]; /* Filler bytes to the end of the block */ 127 short checksum; /* checksum over the XBN */ 128 #endif 129 }; 130 131 /* 132 * Software status 133 */ 134 struct rdsoftc { 135 device_t sc_dev; /* must be here! (pseudo-OOP:) */ 136 struct hdcsoftc *sc_hdc; 137 struct disk sc_disk; /* disklabel etc. */ 138 struct rdgeom sc_xbn; /* on-disk geometry information */ 139 int sc_drive; /* physical unit number */ 140 }; 141 142 struct hdcsoftc { 143 device_t sc_dev; /* must be here (pseudo-OOP:) */ 144 struct evcnt sc_intrcnt; 145 struct vsbus_dma sc_vd; 146 vaddr_t sc_regs; /* register addresses */ 147 struct bufq_state *sc_q; 148 struct buf *sc_active; 149 struct hdc9224_UDCreg sc_creg; /* (command) registers to be written */ 150 struct hdc9224_UDCreg sc_sreg; /* (status) registers being read */ 151 void * sc_dmabase; /* */ 152 int sc_dmasize; 153 void *sc_bufaddr; /* Current in-core address */ 154 int sc_diskblk; /* Current block on disk */ 155 int sc_bytecnt; /* How much left to transfer */ 156 int sc_xfer; /* Current transfer size */ 157 int sc_retries; 158 volatile u_char sc_status; /* last status from interrupt */ 159 char sc_intbit; 160 }; 161 162 struct hdc_attach_args { 163 int ha_drive; 164 }; 165 166 /* 167 * prototypes for (almost) all the internal routines 168 */ 169 static int hdcmatch(device_t, cfdata_t, void *); 170 static void hdcattach(device_t, device_t, void *); 171 static int hdcprint(void *, const char *); 172 static int rdmatch(device_t, cfdata_t, void *); 173 static void rdattach(device_t, device_t, void *); 174 static void hdcintr(void *); 175 static int hdc_command(struct hdcsoftc *, int); 176 static void rd_readgeom(struct hdcsoftc *, struct rdsoftc *); 177 #ifdef RDDEBUG 178 static void hdc_printgeom( struct rdgeom *); 179 #endif 180 static void hdc_writeregs(struct hdcsoftc *); 181 static void hdcstart(struct hdcsoftc *, struct buf *); 182 static int hdc_rdselect(struct hdcsoftc *, int); 183 static void rdmakelabel(struct disklabel *, struct rdgeom *); 184 static void hdc_writeregs(struct hdcsoftc *); 185 static void hdc_readregs(struct hdcsoftc *); 186 static void hdc_qstart(void *); 187 188 CFATTACH_DECL_NEW(hdc, sizeof(struct hdcsoftc), 189 hdcmatch, hdcattach, NULL, NULL); 190 191 CFATTACH_DECL_NEW(rd, sizeof(struct rdsoftc), 192 rdmatch, rdattach, NULL, NULL); 193 194 static dev_type_open(rdopen); 195 static dev_type_close(rdclose); 196 static dev_type_read(rdread); 197 static dev_type_write(rdwrite); 198 static dev_type_ioctl(rdioctl); 199 static dev_type_strategy(rdstrategy); 200 static dev_type_size(rdpsize); 201 202 const struct bdevsw rd_bdevsw = { 203 .d_open = rdopen, 204 .d_close = rdclose, 205 .d_strategy = rdstrategy, 206 .d_ioctl = rdioctl, 207 .d_dump = nulldump, 208 .d_psize = rdpsize, 209 .d_flag = D_DISK 210 }; 211 212 const struct cdevsw rd_cdevsw = { 213 .d_open = rdopen, 214 .d_close = rdclose, 215 .d_read = rdread, 216 .d_write = rdwrite, 217 .d_ioctl = rdioctl, 218 .d_stop = nostop, 219 .d_tty = notty, 220 .d_poll = nopoll, 221 .d_mmap = nommap, 222 .d_kqfilter = nokqfilter, 223 .d_flag = D_DISK 224 }; 225 226 /* At least 0.7 uS between register accesses */ 227 static int rd_dmasize, inq = 0; 228 static volatile int u; 229 #define WAIT __asm("movl %0,%0;movl %0,%0;movl %0,%0; movl %0,%0" :: "m"(u)) 230 231 #define HDC_WREG(x) *(volatile char *)(sc->sc_regs) = (x) 232 #define HDC_RREG *(volatile char *)(sc->sc_regs) 233 #define HDC_WCMD(x) *(volatile char *)(sc->sc_regs + 4) = (x) 234 #define HDC_RSTAT *(volatile char *)(sc->sc_regs + 4) 235 236 /* 237 * new-config's hdcmatch() is similiar to old-config's hdcprobe(), 238 * thus we probe for the existence of the controller and reset it. 239 * NB: we can't initialize the controller yet, since space for hdcsoftc 240 * is not yet allocated. Thus we do this in hdcattach()... 241 */ 242 int 243 hdcmatch(device_t parent, cfdata_t cf, void *aux) 244 { 245 struct vsbus_attach_args * const va = aux; 246 volatile char * const hdc_csr = (volatile char *)va->va_addr; 247 int i; 248 249 u = 8; /* !!! - GCC */ 250 251 if (vax_boardtype == VAX_BTYP_49 || vax_boardtype == VAX_BTYP_46 252 || vax_boardtype == VAX_BTYP_48 || vax_boardtype == VAX_BTYP_53) 253 return 0; 254 255 hdc_csr[4] = DKC_CMD_RESET; /* reset chip */ 256 for (i = 0; i < 1000; i++) { 257 DELAY(1000); 258 if (hdc_csr[4] & DKC_ST_DONE) 259 break; 260 } 261 if (i == 100) 262 return 0; /* No response to reset */ 263 264 hdc_csr[4] = DKC_CMD_SETREGPTR|UDC_TERM; 265 WAIT; 266 hdc_csr[0] = UDC_TC_CRCPRE|UDC_TC_INTDONE; 267 WAIT; 268 hdc_csr[4] = DKC_CMD_DRDESELECT; /* Should be harmless */ 269 DELAY(1000); 270 return (1); 271 } 272 273 int 274 hdcprint(void *aux, const char *name) 275 { 276 struct hdc_attach_args * const ha = aux; 277 278 if (name) 279 aprint_normal ("RD?? at %s drive %d", name, ha->ha_drive); 280 return UNCONF; 281 } 282 283 /* 284 * hdc_attach() probes for all possible devices 285 */ 286 void 287 hdcattach(device_t parent, device_t self, void *aux) 288 { 289 struct vsbus_attach_args * const va = aux; 290 struct hdcsoftc * const sc = device_private(self); 291 struct hdc_attach_args ha; 292 int status, i; 293 294 aprint_normal("\n"); 295 296 sc->sc_dev = self; 297 298 /* 299 * Get interrupt vector, enable instrumentation. 300 */ 301 scb_vecalloc(va->va_cvec, hdcintr, sc, SCB_ISTACK, &sc->sc_intrcnt); 302 evcnt_attach_dynamic(&sc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, 303 device_xname(self), "intr"); 304 305 sc->sc_regs = vax_map_physmem(va->va_paddr, 1); 306 sc->sc_dmabase = (void *)va->va_dmaaddr; 307 sc->sc_dmasize = va->va_dmasize; 308 sc->sc_intbit = va->va_maskno; 309 rd_dmasize = min(MAXPHYS, sc->sc_dmasize); /* Used in rd_minphys */ 310 311 sc->sc_vd.vd_go = hdc_qstart; 312 sc->sc_vd.vd_arg = sc; 313 /* 314 * Reset controller. 315 */ 316 HDC_WCMD(DKC_CMD_RESET); 317 DELAY(1000); 318 status = HDC_RSTAT; 319 if (status != (DKC_ST_DONE|DKC_TC_SUCCESS)) { 320 aprint_error_dev(self, "RESET failed, status 0x%x\n", status); 321 return; 322 } 323 bufq_alloc(&sc->sc_q, "disksort", BUFQ_SORT_CYLINDER); 324 325 /* 326 * now probe for all possible hard drives 327 */ 328 for (i = 0; i < 4; i++) { 329 if (i == 2) /* Floppy, needs special handling */ 330 continue; 331 HDC_WCMD(DKC_CMD_DRSELECT | i); 332 DELAY(1000); 333 status = HDC_RSTAT; 334 ha.ha_drive = i; 335 if ((status & DKC_ST_TERMCOD) == DKC_TC_SUCCESS) 336 config_found(self, (void *)&ha, hdcprint); 337 } 338 } 339 340 /* 341 * rdmatch() probes for the existence of a RD-type disk/floppy 342 */ 343 int 344 rdmatch(device_t parent, cfdata_t cf, void *aux) 345 { 346 struct hdc_attach_args * const ha = aux; 347 348 if (cf->cf_loc[HDCCF_DRIVE] != HDCCF_DRIVE_DEFAULT && 349 cf->cf_loc[HDCCF_DRIVE] != ha->ha_drive) 350 return 0; 351 352 if (ha->ha_drive == 2) /* Always floppy, not supported */ 353 return 0; 354 355 return 1; 356 } 357 358 void 359 rdattach(device_t parent, device_t self, void *aux) 360 { 361 struct hdcsoftc * const sc = device_private(parent); 362 struct rdsoftc * const rd = device_private(self); 363 struct hdc_attach_args * const ha = aux; 364 struct disklabel *dl; 365 const char *msg; 366 367 rd->sc_dev = self; 368 rd->sc_drive = ha->ha_drive; 369 rd->sc_hdc = sc; 370 /* 371 * Initialize and attach the disk structure. 372 */ 373 disk_init(&rd->sc_disk, device_xname(rd->sc_dev), NULL); 374 disk_attach(&rd->sc_disk); 375 376 /* 377 * if it's not a floppy then evaluate the on-disk geometry. 378 * if necessary correct the label... 379 */ 380 rd_readgeom(sc, rd); 381 disk_printtype(rd->sc_drive, rd->sc_xbn.media_id); 382 dl = rd->sc_disk.dk_label; 383 rdmakelabel(dl, &rd->sc_xbn); 384 msg = readdisklabel(MAKEDISKDEV(cdevsw_lookup_major(&rd_cdevsw), 385 device_unit(rd->sc_dev), RAW_PART), 386 rdstrategy, dl, NULL); 387 if (msg) 388 aprint_normal_dev(self, "%s: size %u sectors", 389 msg, dl->d_secperunit); 390 else 391 aprint_normal_dev(self, "size %u sectors\n", dl->d_secperunit); 392 #ifdef RDDEBUG 393 hdc_printgeom(&rd->sc_xbn); 394 #endif 395 } 396 397 void 398 hdcintr(void *arg) 399 { 400 struct hdcsoftc * const sc = arg; 401 struct buf *bp; 402 403 sc->sc_status = HDC_RSTAT; 404 if (sc->sc_active == 0) 405 return; /* Complain? */ 406 407 if ((sc->sc_status & (DKC_ST_INTPEND|DKC_ST_DONE)) != 408 (DKC_ST_INTPEND|DKC_ST_DONE)) 409 return; /* Why spurious ints sometimes??? */ 410 411 bp = sc->sc_active; 412 sc->sc_active = 0; 413 if ((sc->sc_status & DKC_ST_TERMCOD) != DKC_TC_SUCCESS) { 414 int i; 415 u_char *g = (u_char *)&sc->sc_sreg; 416 417 if (sc->sc_retries++ < 3) { /* Allow 3 retries */ 418 hdcstart(sc, bp); 419 return; 420 } 421 aprint_error_dev(sc->sc_dev, "failed, status 0x%x\n", 422 sc->sc_status); 423 hdc_readregs(sc); 424 for (i = 0; i < 10; i++) 425 aprint_error("%i: %x\n", i, g[i]); 426 bp->b_error = ENXIO; 427 bp->b_resid = bp->b_bcount; 428 biodone(bp); 429 vsbus_dma_intr(); 430 return; 431 } 432 433 if (bp->b_flags & B_READ) { 434 vsbus_copytoproc(bp->b_proc, sc->sc_dmabase, sc->sc_bufaddr, 435 sc->sc_xfer); 436 } 437 sc->sc_diskblk += (sc->sc_xfer/DEV_BSIZE); 438 sc->sc_bytecnt -= sc->sc_xfer; 439 sc->sc_bufaddr = (char *)sc->sc_bufaddr + sc->sc_xfer; 440 441 if (sc->sc_bytecnt == 0) { /* Finished transfer */ 442 biodone(bp); 443 vsbus_dma_intr(); 444 } else 445 hdcstart(sc, bp); 446 } 447 448 /* 449 * 450 */ 451 void 452 rdstrategy(struct buf *bp) 453 { 454 struct rdsoftc *rd; 455 struct hdcsoftc *sc; 456 struct disklabel *lp; 457 int s; 458 459 if ((rd = device_lookup_private(&rd_cd, DISKUNIT(bp->b_dev))) == NULL) { 460 bp->b_error = ENXIO; 461 goto done; 462 } 463 sc = rd->sc_hdc; 464 465 lp = rd->sc_disk.dk_label; 466 if ((bounds_check_with_label(&rd->sc_disk, bp, 1)) <= 0) 467 goto done; 468 469 if (bp->b_bcount == 0) 470 goto done; 471 472 bp->b_rawblkno = 473 bp->b_blkno + lp->d_partitions[DISKPART(bp->b_dev)].p_offset; 474 bp->b_cylinder = bp->b_rawblkno / lp->d_secpercyl; 475 476 s = splbio(); 477 bufq_put(sc->sc_q, bp); 478 if (inq == 0) { 479 inq = 1; 480 vsbus_dma_start(&sc->sc_vd); 481 } 482 splx(s); 483 return; 484 485 done: biodone(bp); 486 } 487 488 void 489 hdc_qstart(void *arg) 490 { 491 struct hdcsoftc * const sc = arg; 492 493 inq = 0; 494 495 hdcstart(sc, 0); 496 if (bufq_peek(sc->sc_q)) { 497 vsbus_dma_start(&sc->sc_vd); /* More to go */ 498 inq = 1; 499 } 500 } 501 502 void 503 hdcstart(struct hdcsoftc *sc, struct buf *ob) 504 { 505 struct hdc9224_UDCreg * const p = &sc->sc_creg; 506 struct disklabel *lp; 507 struct rdsoftc *rd; 508 struct buf *bp; 509 int cn, sn, tn, bn, blks; 510 volatile char ch; 511 512 if (sc->sc_active) 513 return; /* Already doing something */ 514 515 if (ob == 0) { 516 bp = bufq_get(sc->sc_q); 517 if (bp == NULL) 518 return; /* Nothing to do */ 519 sc->sc_bufaddr = bp->b_data; 520 sc->sc_diskblk = bp->b_rawblkno; 521 sc->sc_bytecnt = bp->b_bcount; 522 sc->sc_retries = 0; 523 bp->b_resid = 0; 524 } else 525 bp = ob; 526 527 rd = device_lookup_private(&rd_cd, DISKUNIT(bp->b_dev)); 528 hdc_rdselect(sc, rd->sc_drive); 529 sc->sc_active = bp; 530 531 bn = sc->sc_diskblk; 532 lp = rd->sc_disk.dk_label; 533 if (bn) { 534 cn = bn / lp->d_secpercyl; 535 sn = bn % lp->d_secpercyl; 536 tn = sn / lp->d_nsectors; 537 sn = sn % lp->d_nsectors; 538 } else 539 cn = sn = tn = 0; 540 541 cn++; /* first cylinder is reserved */ 542 543 bzero(p, sizeof(struct hdc9224_UDCreg)); 544 545 /* 546 * Tricky thing: the controller do itself only increase the sector 547 * number, not the track or cylinder number. Therefore the driver 548 * is not allowed to have transfers that crosses track boundaries. 549 */ 550 blks = sc->sc_bytecnt/DEV_BSIZE; 551 if ((sn + blks) > lp->d_nsectors) 552 blks = lp->d_nsectors - sn; 553 554 p->udc_dsect = sn; 555 p->udc_dcyl = cn & 0xff; 556 p->udc_dhead = ((cn >> 4) & 0x70) | tn; 557 p->udc_scnt = blks; 558 559 p->udc_rtcnt = UDC_RC_RTRYCNT; 560 p->udc_mode = UDC_MD_HDD; 561 p->udc_term = UDC_TC_CRCPRE|UDC_TC_INTDONE|UDC_TC_TDELDAT|UDC_TC_TWRFLT; 562 hdc_writeregs(sc); 563 564 /* Count up vars */ 565 sc->sc_xfer = blks * DEV_BSIZE; 566 567 ch = HDC_RSTAT; /* Avoid pending interrupts */ 568 WAIT; 569 vsbus_clrintr(sc->sc_intbit); /* Clear pending int's */ 570 571 if (bp->b_flags & B_READ) { 572 HDC_WCMD(DKC_CMD_READ_HDD); 573 } else { 574 vsbus_copyfromproc(bp->b_proc, sc->sc_bufaddr, sc->sc_dmabase, 575 sc->sc_xfer); 576 HDC_WCMD(DKC_CMD_WRITE_HDD); 577 } 578 } 579 580 void 581 rd_readgeom(struct hdcsoftc *sc, struct rdsoftc *rd) 582 { 583 struct hdc9224_UDCreg * const p = &sc->sc_creg; 584 585 hdc_rdselect(sc, rd->sc_drive); /* select drive right now */ 586 587 memset(p, 0, sizeof(*p)); 588 589 p->udc_scnt = 1; 590 p->udc_rtcnt = UDC_RC_RTRYCNT; 591 p->udc_mode = UDC_MD_HDD; 592 p->udc_term = UDC_TC_CRCPRE|UDC_TC_INTDONE|UDC_TC_TDELDAT|UDC_TC_TWPROT; 593 hdc_writeregs(sc); 594 sc->sc_status = 0; 595 HDC_WCMD(DKC_CMD_READ_HDD|2); 596 while ((sc->sc_status & DKC_ST_INTPEND) == 0) 597 ; 598 bcopy(sc->sc_dmabase, &rd->sc_xbn, sizeof(struct rdgeom)); 599 } 600 601 #ifdef RDDEBUG 602 /* 603 * display the contents of the on-disk geometry structure 604 */ 605 void 606 hdc_printgeom(struct rdgeom *p) 607 { 608 printf ("**DiskData** XBNs: %ld, DBNs: %ld, LBNs: %ld, RBNs: %ld\n", 609 p->xbn_count, p->dbn_count, p->lbn_count, p->rbn_count); 610 printf ("sec/track: %d, tracks: %d, cyl: %d, precomp/reduced: %d/%d\n", 611 p->nspt, p->ntracks, p->ncylinders, p->precomp, p->reduced); 612 printf ("seek-rate: %d, crc/eec: %s, RCT: %d, RCT-copies: %d\n", 613 p->seek_rate, p->crc_eec?"EEC":"CRC", p->rct, p->rct_ncopies); 614 printf ("media-ID: %lx, interleave: %d, headskew: %d, cylskew: %d\n", 615 p->media_id, p->interleave, p->headskew, p->cylskew); 616 printf ("gap0: %d, gap1: %d, gap2: %d, gap3: %d, sync-value: %d\n", 617 p->gap0_size, p->gap1_size, p->gap2_size, p->gap3_size, 618 p->sync_value); 619 } 620 #endif 621 622 /* 623 * Return the size of a partition, if known, or -1 if not. 624 */ 625 int 626 rdpsize(dev_t dev) 627 { 628 struct rdsoftc * const rd = device_lookup_private(&rd_cd, DISKUNIT(dev)); 629 const int part = DISKPART(dev); 630 631 if (rd == NULL || part >= rd->sc_disk.dk_label->d_npartitions) 632 return -1; 633 634 return rd->sc_disk.dk_label->d_partitions[part].p_size * 635 (rd->sc_disk.dk_label->d_secsize / DEV_BSIZE); 636 } 637 638 /* 639 * 640 */ 641 int 642 rdopen(dev_t dev, int flag, int fmt, struct lwp *l) 643 { 644 struct rdsoftc * const rd = device_lookup_private(&rd_cd, DISKUNIT(dev)); 645 const int part = DISKPART(dev); 646 647 if (rd == NULL || part >= rd->sc_disk.dk_label->d_npartitions) 648 return ENXIO; 649 650 switch (fmt) { 651 case S_IFCHR: 652 rd->sc_disk.dk_copenmask |= (1 << part); 653 break; 654 case S_IFBLK: 655 rd->sc_disk.dk_bopenmask |= (1 << part); 656 break; 657 } 658 rd->sc_disk.dk_openmask = 659 rd->sc_disk.dk_copenmask | rd->sc_disk.dk_bopenmask; 660 661 return 0; 662 } 663 664 /* 665 * 666 */ 667 int 668 rdclose(dev_t dev, int flag, int fmt, struct lwp *l) 669 { 670 struct rdsoftc * const rd = device_lookup_private(&rd_cd, DISKUNIT(dev)); 671 const int part = DISKPART(dev); 672 673 switch (fmt) { 674 case S_IFCHR: 675 rd->sc_disk.dk_copenmask &= ~(1 << part); 676 break; 677 case S_IFBLK: 678 rd->sc_disk.dk_bopenmask &= ~(1 << part); 679 break; 680 } 681 rd->sc_disk.dk_openmask = 682 rd->sc_disk.dk_copenmask | rd->sc_disk.dk_bopenmask; 683 684 return (0); 685 } 686 687 /* 688 * 689 */ 690 int 691 rdioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 692 { 693 struct rdsoftc * const rd = device_lookup_private(&rd_cd, DISKUNIT(dev)); 694 struct disklabel * const lp = rd->sc_disk.dk_label; 695 int error = 0; 696 697 switch (cmd) { 698 case DIOCGDINFO: 699 *(struct disklabel *)addr = *lp; 700 break; 701 702 case DIOCGPART: 703 ((struct partinfo *)addr)->disklab = lp; 704 ((struct partinfo *)addr)->part = 705 &lp->d_partitions[DISKPART(dev)]; 706 break; 707 708 case DIOCWDINFO: 709 case DIOCSDINFO: 710 if ((flag & FWRITE) == 0) 711 return EBADF; 712 error = (cmd == DIOCSDINFO ? 713 setdisklabel(lp, (struct disklabel *)addr, 0, 0) : 714 writedisklabel(dev, rdstrategy, lp, 0)); 715 break; 716 717 case DIOCGDEFLABEL: 718 memset(lp, 0, sizeof(*lp)); 719 rdmakelabel(lp, &rd->sc_xbn); 720 break; 721 722 case DIOCWLABEL: 723 if ((flag & FWRITE) == 0) 724 error = EBADF; 725 break; 726 727 default: 728 error = ENOTTY; 729 } 730 return error; 731 } 732 733 /* 734 * 735 */ 736 int 737 rdread(dev_t dev, struct uio *uio, int flag) 738 { 739 return (physio (rdstrategy, NULL, dev, B_READ, minphys, uio)); 740 } 741 742 /* 743 * 744 */ 745 int 746 rdwrite(dev_t dev, struct uio *uio, int flag) 747 { 748 return (physio (rdstrategy, NULL, dev, B_WRITE, minphys, uio)); 749 } 750 751 /* 752 * we have to wait 0.7 usec between two accesses to any of the 753 * dkc-registers, on a VS2000 with 1 MIPS, this is roughly one 754 * instruction. Thus the loop-overhead will be enough... 755 */ 756 static void 757 hdc_readregs(struct hdcsoftc *sc) 758 { 759 int i; 760 char *p; 761 762 HDC_WCMD(DKC_CMD_SETREGPTR); 763 WAIT; 764 p = (void*)&sc->sc_sreg; 765 for (i=0; i<10; i++) { 766 *p++ = HDC_RREG; /* dkc_reg auto-increments */ 767 WAIT; 768 } 769 } 770 771 static void 772 hdc_writeregs(struct hdcsoftc *sc) 773 { 774 int i; 775 char *p; 776 777 HDC_WCMD(DKC_CMD_SETREGPTR); 778 p = (void*)&sc->sc_creg; 779 for (i=0; i<10; i++) { 780 HDC_WREG(*p++); /* dkc_reg auto-increments */ 781 WAIT; 782 } 783 } 784 785 /* 786 * hdc_command() issues a command and polls the intreq-register 787 * to find when command has completed 788 */ 789 int 790 hdc_command(struct hdcsoftc *sc, int cmd) 791 { 792 hdc_writeregs(sc); /* write the prepared registers */ 793 HDC_WCMD(cmd); 794 WAIT; 795 return (0); 796 } 797 798 int 799 hdc_rdselect(struct hdcsoftc *sc, int unit) 800 { 801 struct hdc9224_UDCreg * const p = &sc->sc_creg; 802 int error; 803 804 /* 805 * bring "creg" in some known-to-work state and 806 * select the drive with the DRIVE SELECT command. 807 */ 808 memset(p, 0, sizeof(*p)); 809 810 p->udc_rtcnt = UDC_RC_HDD_READ; 811 p->udc_mode = UDC_MD_HDD; 812 p->udc_term = UDC_TC_HDD; 813 814 error = hdc_command(sc, DKC_CMD_DRSEL_HDD | unit); 815 816 return error; 817 } 818 819 void 820 rdmakelabel(struct disklabel *dl, struct rdgeom *g) 821 { 822 int n, p = 0; 823 824 dl->d_bbsize = BBSIZE; 825 dl->d_sbsize = SBLOCKSIZE; 826 dl->d_typename[p++] = MSCP_MID_CHAR(2, g->media_id); 827 dl->d_typename[p++] = MSCP_MID_CHAR(1, g->media_id); 828 if (MSCP_MID_ECH(0, g->media_id)) 829 dl->d_typename[p++] = MSCP_MID_CHAR(0, g->media_id); 830 n = MSCP_MID_NUM(g->media_id); 831 if (n > 99) { 832 dl->d_typename[p++] = '1'; 833 n -= 100; 834 } 835 if (n > 9) { 836 dl->d_typename[p++] = (n / 10) + '0'; 837 n %= 10; 838 } 839 dl->d_typename[p++] = n + '0'; 840 dl->d_typename[p] = 0; 841 dl->d_type = DTYPE_MSCP; /* XXX - what to use here??? */ 842 dl->d_rpm = 3600; 843 dl->d_secsize = DEV_BSIZE; 844 845 dl->d_secperunit = g->lbn_count; 846 dl->d_nsectors = g->nspt; 847 dl->d_ntracks = g->ntracks; 848 dl->d_secpercyl = dl->d_nsectors * dl->d_ntracks; 849 dl->d_ncylinders = dl->d_secperunit / dl->d_secpercyl; 850 851 dl->d_npartitions = MAXPARTITIONS; 852 dl->d_partitions[0].p_size = dl->d_partitions[2].p_size = 853 dl->d_secperunit; 854 dl->d_partitions[0].p_offset = dl->d_partitions[2].p_offset = 0; 855 dl->d_interleave = dl->d_headswitch = 1; 856 dl->d_magic = dl->d_magic2 = DISKMAGIC; 857 dl->d_checksum = dkcksum(dl); 858 } 859
Indexes created Wed Oct 01 07:09:59 GMT 2025